Door lock with handle having password child lock function

Abstract

The invention discloses a door lock with a handle having a password child lock function. The mechanical password child lock comprises a panel or a base 1 and a handle 2 (handle for short) provided with a mechanical password child lock functional structure device, wherein two main parts, namely a mechanical password component 2-1 and a clutch rotating shaft 2-2, are mounted in the handle 2. Wherein the mechanical password assembly 2-1 is mainly composed of a password dial wheel 2-1-1, a driven wheel 2-1-2 with a groove and a clutch plate 2-1-3. Each group of driven wheels 2-1-2 are respectively sleeved in the middle of the password dial wheels 2-1-1; and the groove surfaces of the driven wheels 2-1-2 move in a manner of being tangent to the convex surfaces of the clutch plates 2-1-3. And when the groove surfaces of the driven wheels 2-1-2 are arranged in a straight line, the clutch plates 2-1-3 are automatically inserted into the concave surfaces. And when the concave surface of any group of driven wheels 2-1-2 jumps out of the convex surface of the clutch plate 2-1-3, the clutch plate 2-1-3 is automatically adjusted to the lowest section position. The clutch rotating shaft 2-2 is provided with a notch which is separated from and linked with the clutch plate 2-1-3, when the clutch plate 2-1-3 is located at the lowest section position, the clutch plate 2-1-3 and the clutch rotating shaft 2-2 are in a separated state, and the clutch rotating shaft 2-2 cannot be driven to unlock by pressing the handle 2. When the clutch plate 2-1-3 is located at the high section position, one end of the clutch pressing plate 2-1-3 is embedded into the notch of the clutch rotating shaft 2-2 to form linkage, and the lock can be unlocked by pressing the handle 2.

Description

Technical Field

[0001] The present invention relates to a door lock, in particular to a door lock with a password child lock function on the handle. Background Art

[0002] At present, the indoor rear handles of various common door locks on the market do not have a child lock function to prevent infants and young children from easily and quickly opening the door. The problem caused by this is that when the adult taking care of the infants and young children needs to leave for a while (for example: going to the toilet or cooking in the kitchen and other various factors), the adult taking care of the infants and young children can temporarily use the indoor child lock function to close the door. When the infants and young children want to open the door and run outside, the child lock function of the handle can effectively prevent the infants and young children from easily and quickly opening the door, thus protecting the safety of the infants and young children to a great extent. Summary of the Invention

[0003] In view of the above problems, the present invention provides a door lock with a password child lock function on the handle. Its main principle is to provide a mechanism on the handle that can control the handle and the clutch rotating shaft to be in two states of linkage or free movement according to needs. Brief Description of the Drawings

[0004] Att Figure 1 : Schematic diagram of the appearance of the present invention; Att Figure 2 : Schematic diagram of the external shape of the mechanical password component of the present invention; Att Figure 3 : Schematic diagram of the external shape of the clutch plate of the present invention; Att Figure 4 : Schematic diagram of the external shape of the clutch rotating shaft of the present invention; Att Figure 5 : Schematic diagram of the working principle of the handle in the linkage state of the present invention; Att Figure 6 : Schematic diagram of the working principle of the handle in the free state of the present invention; Detailed Description of the Invention

[0005] The present invention mainly consists of: a panel or a base 1 and a handle 2 provided with a mechanical password child lock functional structure device (hereinafter referred to as: the handle). There are two main parts, namely a mechanical password component 2-1 and a clutch rotating shaft 2-2, installed inside the handle 2. The mechanical password component 2-1 mainly consists of a password dial 2-1-1, a driven wheel 2-1-2 with grooves, and a clutch plate 2-1-3. Each group of driven wheels 2-1-2 is respectively sleeved in the middle of the password dial 2-1-1, and the groove surface of each driven wheel 2-1-2 is tangent to the convex surface of the clutch plate 2-1-3 for movement. When the groove surfaces of each driven wheel 2-1-2 are arranged in a straight line, the convex surface of the clutch plate 2-1-3 automatically inserts into the concave surface under the action of the torsion force of the torsion spring. When the concave surface of any group of driven wheels 2-1-2 jumps out of the convex surface of the clutch plate 2-1-3, the clutch plate 2-1-3 is automatically adjusted to the lowest position by the driven wheel 2-1-2. The clutch rotating shaft 2-2 is provided with a notch for separating and linking with the clutch plate 2-1-3. When the clutch plate 2-1-3 is in the lowest position, it is in a separated state from the clutch rotating shaft 2-2, and pressing the handle 2 cannot drive the clutch rotating shaft 2-2 to unlock. When the clutch plate 2-1-3 is in the high position, one end of the clutch pressure plate 2-1-3 is inserted into the notch of the clutch rotating shaft 2-2 to form a linkage, and pressing the handle 2 can unlock the lock.

Claims

1. The present invention is composed of a panel or a base 1 and a handle 2 (hereinafter referred to as "handle") provided with a mechanical password child lock functional structure device.

2. The handle 2 is installed with two main parts, namely a mechanical password component 2-1 and a clutch rotating shaft 2-2. Among them, The mechanical password component 2-1 mainly consists of a password dial 2-1-1, a driven wheel 2-1-2 with grooves, and a clutch plate 2-1-3. Each group of driven wheels 2-1-2 is respectively sleeved in the middle of the password dial 2-1-1, and the groove surfaces of the driven wheels 2-1-2 are in tangential motion with the convex surface of the clutch plate 2-1-3. When the groove surfaces of each driven wheel 2-1-2 are arranged in a straight line, the clutch plate 2-1-3 automatically inserts into the concave surface. When the concave surface of any group of driven wheels 2-1-2 jumps out of the convex surface of the clutch plate 2-1-3, the clutch plate 2-1-3 automatically adjusts to the lowest position.

3. The clutch rotating shaft 2-2 is provided with a notch for separating and linking with the clutch plate 2-1-3. When the clutch plate 2-1-3 is in the lowest position, it is in a separated state from the clutch rotating shaft 2-2, and pressing the handle 2 cannot drive the clutch rotating shaft 2-2 to unlock. When the clutch plate 2-1-3 is in the high position, one end of the clutch pressing plate 2-1-3 is inserted into the notch of the clutch rotating shaft 2-2 to form a linkage, and pressing the handle 2 can unlock.

4. A door lock with a password child lock function on the handle as described in claim 1, wherein a mechanical password component 2-1 is provided inside the handle.

5. In the mechanical password component 2-1 as described in claim 2, the convex surface of the clutch pressing plate 2-1-3 makes a tangential motion with the groove surface of the driven wheel 2-1-2. When the clutch plate 2-1-3 is in the lowest position, it is in a separated state from the clutch rotating shaft 2-2. When the clutch plate 2-1-3 is in the high position, one end of the clutch pressing plate 2-1-3 is inserted into the notch of the clutch rotating shaft 2-2 to form a linkage.

6. The clutch rotating shaft 2-2 as described in claim 3 is provided with a notch for separating and linking with the clutch plate 2-1-3.

Images